| abstract |
A main object is to provide a safe and high-performance n-type thermoelectric conversion material. [Solution] 1. General formula: Ti x M y O 2 ( M is, Ta, at least one member selected from Nb and V: 0.78 ≦ x ≦ 1.0 , 0.005 ≦ y ≦ 0.18, 0.01 <y / x). 2. General formula: Ti x M y O 2 ( M is, Ta, at least one member selected from Nb and V: 0.78 ≦ x ≦ 1.0 , 0.005 ≦ y ≦ 0.18, 0.01 <y / x), an n-type thermoelectric conversion element. 3. A thermoelectric conversion power generation element using the n-type thermoelectric conversion element according to Item 2. 4). A thermoelectric conversion power generation apparatus using the thermoelectric power generation element according to Item 3. [Selection figure] None |